Probably not an excellent course but a very good one, at least: Lakeview, a circa 1910 Herbert Strong municipal course just outside of Toronto. What struck me then -- and still now, but in a different & more gca savvy way -- is that there didn't seem much 'happening' there, ie in many ways the course looked at first glance pretty modest, pretty boring even, and looked a lot like a lot of other municipal courses. AND YET -- even back then, when I knew literally nothing about gca -- I could feel/sense something different, something better, much better even, something essentially 'golfy', in a fundamental way. I sensed even then that it was a design that offered everything necessary for a proper round of golf, and nothing unnecessary.
I think that's why I'm particularly drawn still to the humble-looking, gentle lay of the land courses on modest sites with little topographical movement -- the old cardigan sweaters and corduroy slacks of gca, ie courses that 'deliver' as fields of play, without drawing attention to that fact or to themselves.
That seems to me the very height of the art-craft that is gca.